Gas-engine.



No. 845,159.' 'PATENTED FEB. 26, 1907.

W. K. ANDREW.

GAS ENGINE.

I APPLICATION FILED NOV.26, 1906.

I UNITED sTA'IEs PATENT OFFICE.

WILLIAM K. ANDREW, or MILWAUKEE, WIscoNsI ASSIGNOR TO INTER- NATIONAL HARVESTER COMPANY, A CORPORATION or NEW JERSEY.

GAS-ENGINE.

Specification of Letters Patent.

latented Feb. 26, 1907-' Application filed November 26, 1906. Serial No. 345.246.

' adapted to regu ate the supply of gas and air,

which mechanisin is controlled by a governing device operatively connected with a moving part of the engine, and means for ad justing the valve mechanism in a manner to vary the proportions of air and gas as desired.

Referring to the drawings forming a part of the specification, Figure 1 represents an end elevation of a gas-engine having my imroved valve mechanism attached thereto.

' de'rs mounted thereon; 4, the'engine-shaft,

the cam-shaft in any preferred manner.

and 5-fiy-wheels mounted thereon. The cylinders are provided with heads 6 and 7, in which are mountedthe inlet and exhaust valves',which are'opera'tively connected gas con'duit 8, havinglts opposite ends communicating with the combustiomchambers in the cylinder-heads, is connectednear its central portion with a source of gas-supply andis provided with the usual valve mechanism controllingthe admission of explosive mixture to either power-cylinder. In addition to the regular v'alve mechanism I provide a volume-controlling and mixture-proportioning valve mechanism 9, located'between the source of gas and air supply and the regular valve mechanism and o eratively connected with a common'form o governor mechanism 10, mounted u on a vertical shaft 11 and deriving motion om'theengineshaft by any of the usual means. In its preferred form I connect the governor mechanism to a rock-shaft 12, mounted upon the bed of the engine and having a lever-arm 13 fiexi bly connected with the lower end of'a valveoperating rod 14, connected at its upper end with the valve mechanism 9.

The valve mechanism comprises a cylindrical case 15, having opening 16 at its upper. end communicating with the combustion-chamber of 'theengine. A bar 17 extends across the case below the opening 16 and is provided with a on ped portion 18, coincident with the axis oi the case, which is adapted to receiveone end of a coiled spring 19, the opposite end of which surrounds a short stem 20, that projects above a'plate-valve' 21, controlling an opening 22,

formed in the upper end of an inserted chambered core portion 23, surrounded by the case and comprising a gas-chamber 24 at its upper end commimnicating with a source of gas-su ply by means of a port 25 through the wal .of the case, an air-chamber 26 below the gas-chamber and commi meeting with the atmosphere by means of aport 27 through the walls of the case, and a flange portion 28, adapted to be clamped against the end of the case by means of a head-piece 29. A chamber 30 is formed between the bottom of the air-chamber and the head.- piece, and a valve '31 controls the opening 32 commrnicating therewith, and vertical airconduits 33, formed between the inner surface of the case and the body of the case, connect the chamber 30 with an upper chamber portion of the cylinder above the core portion and gas-valve and forming a preliminary mixing-chamber wherein the gas and air unite, to form the mixture. The valve 31 'is mounted upon the upper end of the valvea horizontally-arranged lever 34, pivoted at its opposite end between the side walls of the air-chamber. The stem 20 passes throyghthe valve 21 andis received by a vertical IOO bearing in the upper wall of the air-chamber I and projecting below the bearing rests upon walls of the air-chamber upon the opposite side of the chamber from the pivot of the first-mentioned lever. The valves are In suba lever pivotally connected with the side stantial axial alinemeiIt, and between the i two. levers is a movable fulcrum, consisting of a roller 36, mounted between the inner ends of links 37, that have their opposite ends pivotally connected with the long arm 88 of a 5 bell-cranklever, pivotally motv nted' between the side walls of the air-chamber at 39 and having'the short arm 40 thereof provided with an elongated opening, by means of which it is connected with the upper end of lo a controlling-rod 41, slidably mounted in a vertical bearing in the bottom wall of the air-chamber and the head-piece 29. An arm 42 is formed integral with the head-piece and is provided with a bore in axial alinement I axis and is provided with a turned-hp portion 45, that acts as a bumper to limit the outward movement of the movable fulcrum,

as shown by dotted lines in Fig. 2.

Inoperation the gas-valve 21 and the airvalve 31 are normally open, due to the pressure of the coiled spring 44, and the governor mechanism connected with the valve-rod 14 operates to close the valves in opposition to the pressure of the spring proportionate with thespeed of the engine in a manner to control the volume of mixture passing to- 40 ward the combustion-chambers: The gasvalve having its stem resting upon the pivoted lever will when released move by gravity toward its seat, and the spring above it will insure and accelerate such movement.

By manipulating the adjusting-nuts the roller-fulcrum between the pivoted levers maybe moved toward or from the axis of the valves, the effect being when it is moved:

away from the axis to cause the upper valve 5o-to be lifted. proportionately relative to the lower, and thus reduce the volume of gas in proportion to thearea of the opening. In this manner the proportions of air and gas may be readily controlled, and the governor mechanism connected with the valve mechanism will automaticaliy' regulate the volume of the mixture admitted to the combustion-chamber.

What I claim as my invention, and desire to secure by Letters Patent, iS-'' 1. In combination with a gas-engine, a throttling-governor comprising a cylindrical valve-chamber containing separate gasand air chambers having open ports communieating with a source of gas and a source of air supply, respectively, other ports opening out of said chambers, valves controlling said last-named ports, a speed-governor mechanism operatively connected with said valves in a manner causing them'to close the ports, and an adjustable lever connection between said valves operative to regulate their rela tive movement. I

2. A throttlingovernor for gas-engines comprising, in com ination, a cylinder having an open end in communication with the ccmbustion-chamber of an en ine and its opposite end closed, a gas-chamber and an airchamber intermediate said ends, and a-dividing-wall between said chambers,- an inletpoi't communicating with said gas-chamber and a source of gas-supply, and an inlet-port communicating with said air-chamber and a source of airsupply, an outlet-port communicating with said gas-chamber and the open end of said cylinder, an outletport communicating with said air-chamber, air-conduits communicating with said air-outlet port and the open end-of said cylinder, a valve controlling sai d gi s-outlet port and opening outward from. said gaschamber,'said valve having a stem projecting through a bearing formed in said dividing-wall and extend ng into said air-chamber, a valve controlling said air-outlet port and opening inward into aid air-chamber, a valve-controlling rod having a l'iearing in the closed end of said cylinder and projecting through said aircontrolling valve substantiallyin axial alinement with the stem of said gas-controlling valve, and having an intervening space therebetween, independent levers pivoted upon dpposite sides of said stems and con tacting with the ends thereof, an adjustable fulcrum between said levers, and means for adjusting said fulcrum lengthwise of said levers.

IOC

3 A throttling-governor for gas-en ines" comprising, in combination, a cylinder avng an open end in communication with the combustion-chamber of an engine and its op posite end closed, separate gas and air chambers within said cylinder intermediate its ends, and a dividing-wall between said chamhers, a gas-inlet port communicating with said gas-chamber and a source of gas-supply, and an air-inlet port communicating with said air-chamber and a source of airsupply, an outlet-port communicating with said gaschamber' and the open end of saidcylinder, an outlet-port communicating with said airchamber, air-conduits communicating with said air-outlet port and the open end of-said cylinder, a valve controlling said gas-outlet port and opening outward from said gaschamber, said valve having a stem project ing through a bearing formed in said dividingwall and extending into said airchamber, a valve controlling said air-outlet port and opening inward into said air-chamber, a

1 chamber and the open end of said cylinder,

I closed end of said cylinder and projecting :prising a longitudinally-movable rod mountprising a longitudinally-movable rod mountvalve-controllin rod havin a bearin in the g g g I ed in' said cylinder, means for adjusting said closed end of said cylinder and projecting i through said air-controlling valve substan- I rod longitudinally, and a lever-and-link contially in axial alinement with the stem of j nection between said rod and said movable said gas-controlling valve, and having an infulcrum.

tervening space therebetween, independent 5. A throttling-governor for gas-engines levers pivoted upon opposite sides of said comprising, in combination, a cylinder havstems and contacting with the adjacent ends ing an open end in communication with the thereof, an adjustable fulcrum between said combustion-chamber of an engine and its oplevers, means for adjusting said fulcrum posite end closed, separate gas and air chamlengthwise of said levers, said means com bers' within said cylinder intermediate its ends, and a dividing-wall between said chamed in said cylinder and flexibly connected j bers, a gas-inlet port communicating with with said fulcrum, and means for adjusting 5 said gas-chamber and a source of gas-supply, said rod longitudinally.

[ and an air-inlet port communicating with 4. A- throttlingovernor for gas-engines i said air-chamber and a source of air-supply, comprising, in com ination, a cylinder havan outlet-port communicating with said gasing an'open end in communication with the chamber and the open end of said cylinder, combustion-chamber of an engine and its opan outlet-port communicating with said airposite end closed, separate gas and air chamchamber, air-conduits communicating with bers' within said cylinder intermediate its said air-outlet port and the open end of said ends, and a dividing-wall between said chamcylinder, a valve controlling said gas-outlet hers, a gas-inlet port communicating with port and opening outward from said gassaid gas-chamber and a source of gas-supply, chamber, said valve having a stem project-- anair-inlet port communicating with. said ing through a bearing formed in said dividair-chamber and a source of air-supply, an ing-wall and extending into said air-chamber, outlet-port communicating with said gasa valve controlling said air-outlet port and opening inward into said air-chamber, a valve-controlling rod having a bear-ing in the closed end of said cylinder and projecting through said air-controlling valve substanan outlet-port communicating with said airchamber, air-conduits communicating with said 'ainoutlet port and the open end of said cylinder, a valve controlling said gas-outlet port. and openin outward from said gaschamber, said va ve having a stem projecting through a bearin formed in said dividingwall, a valve controlling said air-outlet port and opening inward into said air-chamber, a I valve-controlling rod having a bearing in the j of said levers.

WVILLIAM K. AND'REVV. V Witnesses: I

B. C. WAIT, W. J. OARNEY.

through said air-controlling valve substantially in axial alinement with the stem of said gas-controlling valve and having an in tervening space therebetween, independent levers pivoted upon opposite sides of said i stems and contacting with the adjacent ends thereof, an adjustable fulcrum between said i levers, means for adjusting said'fulcruml lengthwise of said levers, said means comtially in axial alinement with the stem of said 

